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From traditional to fractional PI control: A key for generalization

Tavazoei, M. S ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1109/MIE.2012.2207818
  3. Publisher: IEEE , 2012
  4. Abstract:
  5. Proportional-integral (PI) controllers are the most common form of feedback used in industrial applications today [1][3]. The use of proportional and integral feedback also has a long history of practical applications [4]. For example, in the middle of the 18th century, centrifugal governors as the proportional feedback were applied to regulate the speed of windmills [5]. By the 19th century, it was known that using integral feedback could remove the offsets appearing in working with governors [6]. At present, PI control, still a very basic form of feedback, is also one of the first solutions often considered in the control of industrial systems [7]. On the other hand, in some applications, using the PI controller in its traditional form may not be satisfactory, and a more advanced controller is needed to achieve control objectives. In such cases, modified versions of the PI controller have been proposed to enhance the controller's performance. The fractional-order PI controller is one of these modified versions, and it is attracting increased interest in control system design uses [8], [9]. The idea of using such a controller originated with fractional calculus, known as a generalization for classical calculus [10]. The following section presents a brief review of recent fractional calculus applications in control system design
  6. Keywords:
  7. 18th century ; 19th century ; Advanced controller ; Classical calculus ; Control objectives ; Fractional calculus ; In-control ; Industrial systems ; PI control ; PI Controller ; Proportional feedback ; Proportional integral controllers ; Calculations ; Centrifugation ; Governors ; Industrial applications ; Machinery ; Systems analysis ; Two term control systems ; Wind power ; Controllers
  8. Source: IEEE Industrial Electronics Magazine ; Volume 6, Issue 3 , 2012 , Pages 41-51 ; 19324529 (ISSN)
  9. URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6306058